Nanoimprinted polymer lasers with threshold below 100 W/cm2 using mixed-order distributed feedback resonators
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Organic semiconductor lasers were fabricated by UV-nanoimprint lithography with thresholds as low as 57 W/cm2 under 4 ns pulsed operation. The nanoimprinted lasers employed mixed-order distributed feedback resonators, with second-order gratings surrounded by first-order gratings, combined with a light-emitting conjugated polymer. They were pumped by InGaN LEDs to produce green-emitting lasers, with thresholds of 208 W/cm2 (102 nJ/pulse). These hybrid lasers incorporate a scalable UV-nanoimprint lithography process, compatible with high-performance LEDs, therefore we have demonstrated a coherent, compact, low-cost light source.
Wang , Y , Tsiminis , G , Kanibolotsky , A L , Skabara , P J , Samuel , I D W & Turnbull , G A 2013 , ' Nanoimprinted polymer lasers with threshold below 100 W/cm 2 using mixed-order distributed feedback resonators ' , Optics Express , vol. 21 , no. 12 , pp. 14362-14367 . https://doi.org/10.1364/OE.21.014362
(c) 2013 OSA. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-12-14362